Machine for manufacturing adhesive binder covers

ABSTRACT

A machine for manufacturing adhesive binder covers is provided with a pair of off-set magazine rolls of two strips of non-adhesive material. The rolls are separated so the strips are supplied with a gap between them. A roll of adhesive strip is positioned in alignment with the gap. A pulling deflector roller having a plurality of separate contact members, preferably point contact members, is provided for pulling the adhesive strip from its roll. At least one pair of pressure rollers is provided downstream from the pulling deflector roller. A cutting device is arranged downstream from the pressure rollers.

E. HEIMANN March 13, 19733 MACl IINE FOR MANUFACTURING "ADHESIVE BINDERCOVERS 3 Sheets-Sheet Filed June 8, 1970 7 Tom- E. HEIMANN March 13,1973 MACHINE FOR MANUFACTURING ADHESIVE BINDER COVERS Filed June 8. 19703 Sheets-Sheet March 13, 1973 E. HEMANN 3,720,566

MACHINE FOR MANUFACTURING ADHESIVE BINDER COVERS Filed June 8, 1970 3Sheets-Sheet 5 United States Patent Office 3,720,566 MACHINE FORMANUFACTURING ADHESIVE BINDER COVERS Egon Heimann, Falkenberg 61,Wuppertal- Elberfeld, Germany Filed June 8, 1970, Ser. No. 48,608 Claimspriority, application Germany, June 28, 1969, P 19 32 967.0 Int. Cl.832i) 31/08, 31/20 US. Cl. 156-544 16 Claims ABSTRACT OF THE DISCLOSUREBACKGROUND OF THE INVENTION The known method for producing adhesivebinder covers is to make them by hand. The covers previously cut to sizeare provided with a back strip with a self-adhesive layer on the insidesurface. This type of production is cumbersome and makes the adhesivecovers expensive.

The latter are, however, becoming of increasing importance as they areused firstly as files and secondly as covers, for example for cheques orthe like.

The aim of the invention is to provide a machine of simple design tomanufacture adhesive binder covers at an advantageous price, by means ofwhich large numbers of adhesive binder covers can be produced in a shorttime.

This aim is achieved in accordance with the invention by having twobearer shafts on the inlet of a pair of feed rollers, each of whichshafts takes a magazine roll, and at least one further bearer shaftlikewise lying in front of the pair of pressure rollers in the region ofthe middle slit of the said bearer shafts, which shaft takes a roll ofadhesive strip, and a transverse cutting device lying beyond the pair offeed rollers for the strips from the magazine rollers stuck together ata separation by the adhesive strip.

In accordance with the invention it is advantageous to provide a furtherbearing shaft above the run in plane of the magazine roller striplikewise in the region of the middle slit of the two magazine rollbearer shafts, which said further shaft takes a roll of protectivestrip.

Preferably in accordance with the invention the protective strip bearershaft can be displaced transverse to the direction of run through.

An essential feature of the invention is that several adhesive stripbearer shafts are combined together preferably in a star-shapedarrangement to form a single magazine.

Here in accordance with the invention it is advantageous if arrangednext to the adhesive strip bearer shaft on the inlet side in front ofthe pair of feed rollers there is a deflecting roller lying in the openangle of deflection of the adhesive strip and only coming into contactwith the adhesive strip over narrow surfaces, preferably point contacts.

Then in accordance with the invention it is of advantage that thedeflecting roller should be in the form of a toothed roller.

An advantageous design of the machine is achieved in 3,720,566 PatentedMar. 13, 1973 accordance with the invention by arranging beneath thetransverse cutting device a bearing surface for catching the descendingadhesive binder covers.

In addition, in accordance with the invention it is advantageous if aguide channel is arranged between the adhesive strip roll and thedeflecting roller to support the adhesive strip from below.

Furthermore an advantageous design of the machine is achieved inaccordance with the invention by providing between the pair of pressurerollers and the transverse cutting device a further pair of pressurerollers driven in synchronism with the deflecting roller, associatedwith which is a pressure roller pressing from above on the protectivestrip.

Finally in accordance with the invention it is also advantageous for theprotective strip bearer shaft to be followed by a device for completelycutting or perforating the protective strip over its length and/orfolding it, which device lies however on the inlet in front of the firstpair of pressure rollers.

In this way a machine of simple construction is provided by means ofwhich adhesive binder covers can be manufactured at an extremelyadvantageous price.

There is the further advantage that the adhesive binder covers can beproduced in a continuous strip which is subsequently cut with thetransverse cutting device to produce covers of the desired size. Thecover rolls preferably lie on the inlet side of a pair of pressurerollers on two bearer shafts lying one beside the other. These shaftsare then easily accessible to operating personnel so that for example itis simple to slide on a new magazine roll. The cover strips and adhesivestrip run together through a pair of pressure rollers where the adhesivestrip is stuck to the cover strip. The adhesive strip is drawn off froma roll, the bearer shaft for which preferably lies in the central slitof the bearer shafts for the magazine rolls, the roll likewise beingarranged in front of the pair of pressure rollers. Arranged beyond thispair of pressure rollers is a transverse cutting device which cuts thecover strips leaving the pressure roller stuck together at a sep arationby the adhesive strip into the desired lengths. If the adhesive strip isto be covered in the middle or if the adhesive binder cover is to beused as a cover, for example for cheques, then it is advantageous toprovide an inside protective sheet in the binder. For this purpose allthat is required is a further bearer shaft for a roll of protectivestrip lying above the run in plane of the cover strips and likewisearranged in the region of the abovementioned central gap. This bearershaft can be displaced transverse to the feed direction to adapt to theregion of the adhesive strip left free. It has been found advantageousto draw the adhesive strip from rolls of small diameter, the bearershafts for which are arranged to form a star-shaped magazine. Thismagazine can be rotated in steps and can easily be loaded. The adhesivestrip drawn olf from the roll of adhesive strip is preferably deflectedby a deflector roller lying in front of the pair of pressure rollers inthe open angle of the adhesive strip. Since this deflector roller is inthe form of a toothed roller, it only makes point contacts with theadhesive strip. When the cover strips have been stuck by the adhesivestrip, the resultant strip is cut in the transverse cutting device, thebinder covers then falling onto a bearing surface underneath thetransverse cutting device. A further pair of pressure rollers arrangedbetween the inlet side pair of pressure rollers and the transversecutting device can be set for example to a greater pressure so as tostick the strips even more firmly. By means of a cutting and/or foldingdevice arranged in front of the inlet side pair of pressure rollers andthe roll of protective strip the latter can be completely out orperforated or folded to the desired length depending on the use to whichthe binder covers are to be put.

Other advantages and details can be learned from the followingdescription of an example of an embodiment which is depicted in thedrawings. These show:

FIG. 1 a diagrammatic side elevation of the machine in accordance withthe invention,

FIG. 2 a plan view of the machine,

FIG. 3 a section along the line A-B in FIG. 2 but on a large scale,

FIG. 4 a perspective view of a binder cover with an inserted stack ofsheets consisting of separate sheets with an associated protectivesheet,

FIG. 5 a cross-section through the back of the cover in FIG. 4,

FIG. 6 a similar section to that in FIG. 5 but with the separate sheetspartially removed,

FIG. 7 a section in the region of the back of a cover serving as aletter file with a protective strip cut into sections.

The machine has a body 1 followed by a transverse cutting device 2arranged in a casing 1'.

A member 3 of the framework of the machine carries on the inlet side ofthe bearings 4 and 5 the bearer shafts 6 and 7 which each take amagazine roll 8 and 9 respectively. The bearings 4 and 5 open upwards sothat, the bearer shafts 6 and 7 can be inserted from above.

The off-set magazine rolls 8 and 9 arranged at a separation from oneanother forming a central gap M and followed by a pair of deflectorrollers 10 and a pair of pressure rollers 11. In the region of thecentral gap M is arranged a starp-shaped formation of bearer shafts 14for rolls of adhesive strip 15 combined together to form a singlemagazine 13 mounted on a strut 12 of the machine body 1 feeding into thepair of pressure rollers. This magazine can be rotated in steps aboutthe axle 16 on the strut 12.

Associated with the bearer shaft 14 for the roll of adhesive strip thereis a deflector roller 17 in the form of a toothed roller arranged on theinlet side beneath the pair of pressure rollers 11.

This deflector roller 17 is arranged in the open angle of deflection ofthe adhesive strip 15 and only makes point contacts with the adhesivestrip 15. The adhesive strip 15 drawn ofl from the roll of adhesivestrip 15 passes through a guide channel 18 supporting it from belowwhich extends between the roll of adhesive strip 15 and the deflectorroller 17. Before the adhesive strip 15 enters the pair of pressurerollers 11 it is guided by a guide 19. Above the run in plane of thecover strips 8' and 9' arranged likewise in the region of the centralgap M between the cover rolls 8 and 9 and mounted in bearings 21 thereis a bearer shaft for taking a roll of protective strip 22. To adapt tothe adhesive strip 15' the bearer shaft 20 for the protective strip canbe displaced transverse to the feed direction x in the direction of thedouble arrow y.

The protective strip 22' can be completely cut or perforated lengthwiseby means of a cutting and/or folding device 23 arranged after the bearershaft 20 for the roll of protective strip but before the pair ofpressure rollers 11.

This device 23 is on a double lever 25 mounted to swing about the axis24, the shorter arm 25' of which has a pressure roller 26 pressing fromabove on the protective strip 22'. This pressure roller 26 precedes afurther pair of pressure rollers 27 which lies between thefirst-mentioned pair of pressure rollers 11 and the transverse cuttingdevice 2. This pair of pressure rollers 27 is driven by a motor 28through a belt which in turn by a belt is driven in synchronism with thedeflector roller 17. Since the reflector roller 17 is in the form of atoothed roller the adhesive strip 15 is drawn off well from the roll ofadhesive strip 15.

On the outlet side of the pair of pressure rollers 27 there is a feedguide 29 running upwards at an inclination to the transverse cuttingdevice 2. Below this transverse cutting device 2 the case 1' forms abearing surface 30 for the falling binder covers 31.

Binder covers 31 are manufactured with this machine in the followingway: The ends of the cover rolls are fed over the pair of deflectorrollers 20 into the pair of pressure rollers 11 together with the end ofthe adhesive strip, the direction of which is altered by the deflectorroller 17 and the guide 19.

After running through this pair of pressure rollers 11, the cover strips8' and 9' stuck together at a separation by the adhesive strip 15' enterthe following pair of pressure rollers, subsequently being cut to thedesired length by the cutting device 2. The resultant sections 8-" and9" of the cover strips 8 and 9' then form the covers of the binderwhilst the section of adhesive strip 15" forms its back.

If the binder 31 is to be provided with an inside protective sheet forexample, see in particular FIGS. 4 to 6, in addition to the processdescribed above, a protective strip 22 is drawn off from the roll 22 andruns through the pairs of pressure rollers 11, 27 together with theother strips 8', 9' and 15. As it can be displaced sidewards the bearershaft 20 for the roll of protective strip can be adjusted in such a waythat the protective strip 22' only covers a narrow strip of the adhesivestrip 15'. After cutting in the transverse cutting device 2 the sectionof protective strip 22" forms the inside protective sheet. The lattercan have fold lines 32, to produce which the protective strip 22' runsthrough the cutting and/or folding device 23 arranged in front of thepair of pressure rollers 11.

On the inside the inner protective sheet formed by the section ofprotective strip 22 is preferably provided over an area with a layer 33of adhesive material. When some of the individual sheets 34 held by thebinder 31 have been removed, the inside protective sheet lies with thislayer of adhesive material against the self-adhesive layer 35 of thesection of adhesive 15" forming the back strip, see FIG. 6. Thisprevents the section of self-adhesive strip left free by the removal ofthe sheets 34 from sticking to the respective uppermost individual sheet34.

If the binder cover is to be used as a file for letters, the protectivestrip 22' is cut in the cutting and/or folding device 23 over itslength, for example into separate longitudinal strips 36, which coversthe free section of adhesive strip between the cover strips 8' and 9'.One or more of these longitudinal strips 36 can then be removed from thecomplete binder 31 as required so that the respective stack of sheetscan be stuck with its rear edge to the now freed self-adhesive layer ofthe back strip formed by the section of adhesive strip 15". Thelongitudinal strips 36 are also provided on the side towards the backstrip with a layer of adhesive so that the strips can easily be pulledoff.

What I claim is:

1. A machine for manufacturing adhesive binder covers comprising, incombination:

(a) a pair of laterally off-set magazine rolls separated from oneanother for supplying respectively a first strip of non-adhesivematerial and a second strip of non-adhesive material with a gap betweensaid strips;

(b) at least one further roll positioned in substantial alignment withthe gap between said strips, said further roll supplying an adhesivestrip;

(c) a pulling deflector roller having a plurality of separated contactmembers in the form of teeth which contact said adhesive strip forpulling said adhesive strip off said further roll;

(d) a pair of pressure rollers arranged next to one another andpositioned downstream from said magazine rolls and from said pullingdeflector roller for receiving and pressing together each of said stripsof non-adhesive material to spaced apart portions of said adhesivestrip, to form a composite strip; and

(e) cutting means positioned downstream from said pair of pressurerollers for transversely cutting the composite strip into covers.

2. A machine as claimed in claim 1 wherein said pulling deflector rolleris positioned between said further roll and said pair of pressurerollers for feeding said adhesive strip via an open angle path.

3. A machine as claimed in claim 1 wherein said composite strip exitssaid pair of pressure rollers in a given plane and further comprising:

(f) an additional roll of strip material positioned above said givenplane and in at least partial alignment with the gap between said firststrip and said second strip for providing a protective strip; and

(g) means positioned downstream from said additional roll of stripmaterial for transporting and pressing together said protective strip inoverlying relationship with at least part of said adhesive strip alongits entire length and at least part of one strip of said first strip ofnon-adhesive material and said second strip of non-adhesive material.

4. A machine as claimed in claim 2 wherein said means for transportingand pressing together comprise a further pair of pressure rollerspositioned between the first said pair of pressure rollers and saidcutting means and an additional pressure roller positioned between saidpairs of pressure rollers and above said given plane for pressing fromabove on said protective strip so that said protective strip adheres tosaid adhesive strip; and further comprising means for driving saidfurther pair of pressure rollers in synchronism with said pullingdeflector roller.

5. A machine as defined in claim 3 further comprising strip cuttingmeans positioned above said given plane and downstream from saidadditional roll for cutting said protective strip along its length.

6. A machine as defined in claim 3 further comprising strip perforatingmeans positioned above said given plane and downstream from saidadditional roll for perforating said protective strip along its length.

7. A machine as claimed in claim 3 wherein said additional roll of stripmaterial positioned above said given plane is of suflicient width sothat the strip of additional material overlies at least a part of saidadhesive strip and extends to a free longitudinal edge of at least onestrip of said strips of non-adhesive material.

8. A machine as claimed in claim 1 wherein said at least one furtherroll is a plurality of rolls for supplying adhesive strips.

9. A machine as claimed in claim 8 wherein said plurality of rolls forsupplying adhesive strips are combined in a star formation to form amagazine.

'10. A machine as claimed in claim 1 further comprising a bearingsurface positioned below and at a distance from said cutting means forcollecting a plurality of the covers in a stack.

11. A machine as claimed in claim 1 further comprising a guide channelpositioned between said further roll and said pulling deflector rollerfor supporting said adhesive strip from beneath.

12. A machine for manufacturing adhesive binder covers comprising, incombination:

(a) a pair of laterally off-set magazine rolls separated from oneanother for supplying respectively a first strip of non-adhesivematerial and a second strip of non-adhesive material with a gap betweensaid strips;

(b) at least one further roll positioned in substantial alignment withthe gap between said strips, said further roll supplying an adhesivestrip;

(c) a pulling deflector roller having a plurality of separated contactmembers which contact said adhesive strip for pulling said adhesivestrip off said further roll;

(d) a pair of pressure rollers arranged next to one another andpositioned downstream from said magazine rolls and from said pullingdeflector roller for receiving and pressing together each of said stripsof non-adhesive material to spaced apart portions of said adhesivestrip, to form a composite strip, and wherein said composite strip exitssaid pair of pressure rollers in a given plane;

(e) an additional roll of strip material positioned above said givenplane and in at least partial alignment with the gap between said firststrip and said second strip for providing a protective strip;

(f) means for displacing said additional roll transverse to the feeddirection of said composite strip;

(g) means positioned downstream from said additional roll of stripmaterial for transporting and pressing together said protective strip inoverlying relationship with at least part of said adhesive strip alongits entire length and at least part of one strip of said first strip ofnon-adhesive material and said second strip of non-adhesive material;and

(h) cutting means positioned downstream from said pair of pressurerollers, said additional roll of strip material and said means fortransporting and pressing together for cutting the composite strip withsaid protective strip into covers.

13. A machine for manufacturing adhesive binder covers comprising, incombination:

(a) a pair of laterally ofl-set magazine rolls separated from oneanother for supplying respectively a first strip of non-adhesivematerial and a second strip of non-adhesive material with a gap betweensaid strips;

(b) at least one further roll positioned in substantial alignment withthe gap between said strips, said further roll supplying an adhesivestrip;

(c) a pulling deflector roller having a plurality of separated contactmembers which contact said adhesive strip for pulling said adhesivestrip off said further roll;

(d) a pair of pressure rollers arranged next to one another andpositioned downstream from said magazine rolls and from said pullingdeflector roller for receiving and pressing together each of said stripsof non-adhesive material to spaced apart portions of said adhesivestrip, to form a composite strip, Wherein said composite strip exitssaid pair of pressure rollers in a given plane and said pullingdeflector roller is positioned between said further roll and said pairof pressure rollers for feeding said adhesive strip via an open anglepath;

(e) an additional roll of strip material positioned above said givenplane and in at least partial alignment with the gap between said firststrip and said second strip for providing a protective strip;

(f) means positioned downstream from said additional roll of stripmaterial for transporting and pressing together said protective strip inoverlying relationship with at least part of said adhesive strip alongits entire length and at least part of one strip of said first strip ofnon-adhesive material and said second strip of non-adhesive material;

(g) strip folding means positioned above said given plane and downstreamfrom said additional roll for folding said protective strip along itslength; and

(h) cutting means positioned downstream from said pair of pressurerollers, said additional roll of strip material and said means fortransporting and pressing together for cutting the composite strip withsaid protective strip into covers.

14. A machine for manufacturing adhesive binder covers comprising, incombination:

(a) a pair of ofl-set magazine rolls, separated from one another forsupplying respectively a first strip of non-adhesive material and asecond strip of nonadhesive material with a gap between said strips;

(b) at least one further roll positioned in substantial alignment withthe gap between said strips for supplying an adhesive strip;

(c) a pulling deflector roller having a plurality of separated contactmembers in the form of teeth which contact said adhesive strip forpulling said adhesive strip off said further roll;

((1) a first pair of pressure rollers arranged next to one another andpositioned downstream from said magazine rolls and said pullingdeflector roller for receiving and pressing together each of said stripsof non-adhesive material to spaced apart portions of said adhesive stripto form a composite strip which exits said first pair of pressurerollers in a given plane;

(e) an additional roll of strip material positioned above said givenplane and in at least partial alignment with the gap between said firststrip and second strip for supplying a protective strip which overlaysat least part of said adhesive strip and at least part of one strip ofsaid first strip of non-adhesive material and said second strip ofnon-adhesive material;

(f) a second pair of pressure rollers positioned downstream from saidfirst pair of pressure rollers and from said additional roll of stripmaterial for transporting and pressing together said protective stripand the composite strip;

(g) means for driving said further pair of pressure rollers insynchronism with said pulling deflector roller;

(h) an additional pressure roller positioned between said pairs ofpressure rollers and above said protective strip so that said protectivestrip adheres to said adhesive strip; and

(i) cutting means positioned downstream from said second pair ofpressure rollers for transversely cutting the composite strip with theoverlying protective strip into covers.

15. A machine as claimed in claim 14 wherein said additional roll ofstrip material positioned above said given plane is of sufficient widthso that the strip of additional material overlies at least a part ofsaid adhesive strip and extends to a free longitudinal edge of at leastone strip of said strips of non-adhesive material.

16. A machine as defined in claim 14 further comprising strip foldingmeans positioned above said given plane and dowstream from saidadditional roll for folding said a protective strip along its length.

References Cited BENJAMIN A. BORCHELT, Primary Examiner J. M. HANLEY,Assistant Examiner US. Cl. X.R.

